A166345
Sequences linked to this entry ?
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A166345: Triangle T(n, k) = coefficients of ( t(n, x) ) where t(n, x) = (1-x)^(n+1)*p(n, x)/x, p(n, x) = x*D( p(n-1, x) ), with p(1, x) = x/(1-x)^2, p(2, x) = …
identification, match reversed triangle, match triangle
1 · 1, 1 · 1, 2, 1 · 1, 7, 7, 1 … Σ 1, 2, 4, 16, 80, 480, 3360, 26880, …